code: def embedding_norm(self):
      if self.embedding is None:
          return None
      return l2norm(self.embedding)
  
file_path: insightface/python-package/insightface/app/common.py
imports: import numpy
  from numpy.linalg import norm
label_desc: Use image node_id 4 for calling the Face obj's underlying member method code with example usage: obj.embedding_norm() and returns: l2norm, None